Process of making a metallic reenforced refractory article



12 1927. Apnl A. lG. BETTS PROCESS OF MAKING' A METALLIC REENFORCEDREFRACTORY ARTICLE Filed April e, 1925 rlatenter! Apr. 12,` 1927.

' ANSON' G. BETTS,'OF KINDERHQOK, NEW YORK.

PROCESS or MAKING A METALLIo REENFORCED RFRACTQRY ARTICLE.

Application led April 6v, 1925. Serial No. 21,230. i

i i This invention relates to a process of making a re brick for use athigh tem'-y perature and under trying conditions wherein brick fail fromunequal expansion and contraction .and other causes` and which isgenerally known as spalling.7

The object of this invention isa process s of making abrick orrefractory shape largely free Vfrom troubles `from \spalling, to-

10 gether With a method of making the same.

Other objects may be noted herein.

The principal feature of the refractory is imbedded W-ire or rods,preferably vmetallic wires, and especialy of heat-resisting metal,

like nickel-chrome Wire. The wires are integrally imbedded in the bodyof the brick and preserve the brick from falling to pieces from crackingunder furnace conditions.

In Fig. l, I have shown in cross section a brick of refractory material-1, and imbedded wires 2, placed in regular order. In Fig. 2 I haveshown a brick v1, in which short wires 2 are present in no order,resulting from the molding of a mass containing short Wires. In Fig. 3,I have shown a. block 1, adapted for suspension by means of the Wires 2,which are regularly spaced as Ishown and brought together at the topinto a cable by twisting 8. Fig. 4 is a view of an arch formed by thisprocess. vIn the manufacture of brick in the ordinary kiln burning orother high heatinv process, Wires would probably befdestroyed by theheat.

In my process, I take suitable powdered refractory material, like groundfire brick, incorporate therewith a suitable chemical bonding agent likebasic aluminu1nchlo- 1 'ride solution, introduce the Wires in themanterior of the Abrick remains relatively cool` and thetendency tocheck in the Very hot surface layers is apt .t9 be offset by a certainsoftness and toughness due to the heat, and in the interior Where thevstrains. and

checkingandspaling take place, and Where refractoryarticle whichconsists in molding such checking and spalling means a serious nerdesired, and cure the product by suitafalling of refraictories into thefurnace, the

Wire is effective.

In my process of making such brick andrefractory articles I have noshrinkage or suspend the brick or block, or otherwise supportit.

The product of this manufacture of: refractory may be developed in thefurnace in which it is used, by preparing a mortar containing' Wiressimilarly to the use of hair in mortar,` and these wires may be added tothe refractory mortar mix inshort cuts and regularlyv distributed bymixing, and When a furnace is being built the mortar may be used inlayers between fire bricks giving an unbreakable mortar which serves asa support for adjacent bricks. arch of the furnace shown in crosssection is In Fig. 4, ythe made fof refractory bricks 4, set in wireL.bound solidied'refractory mortar 5. 'which functions as a generalsupport, and if one of the blocks tends to check 0r spall, the crack isnot communicable across the wire bond plastically applied interveningrefractory, so that the possibility of Whole slabs of refractorysplitting off, is largely or entirely overcome by the means employed andde' scribed.

The wire or wires referred to in the claims do 4not need to be of theordinary round form of uniform cross section, but may be flat, uneven,crimped,- ununiform,

and it is probable that )the round uniform. wire is the least favorableform of Wire for the purpose..

ill)

What I claim as new and desire to secure Y by Letters Patent, is: 1.Process of making metalllc reenforced powdered refractory grain andmetallic Wire cient to crack the product and at a lower with a solublebonding agent, and curing at temperature than that at which the said 10ai temperature below'l that at which said wires are materially anddisadvantageously Wires are seriously injured. C alected.

2. Process of making metallic reenforced In testimony whereof I havehereunto refractory article which consists in moldsigned my name. ingrefractory mix with' imbedded Wires Y and'curing Without change ofvolume suii- ANSON G. BETTS.

